Infiniti Q&A

in morning time-it will crank up and run perfectly fine and idols like dream-after a couple of revs-it will sound like it is rev llimiting and sputters till it dies and will not run again that day-this sequence happens every day. This is what has been done---starter replaced 1 month prior from this problem and ran perfectly fine. Fuel pump is working fine-fuel filter replaced and fuel pressure just fine. Spark plugs, spark wires,ignition module, iginition coil, magnetic pick-up has all been replaced--and still the same problem and gradually getting worse. The odd thing is-I put 3 different gauges and timing light on spark plug wire and when you turn it over-there is nothing and timiming light does not blink. When you take the spark plug out -it is indeed wet with fuel, when you place the spark plug and wire on to the intake manifold and turn it over-it shows great spark,the timiming light blinks,the gauges say good spark and the spark on the spark plug is bright blue. But when you place spark plug back into engine -it dows not spark, the timing light does not blink,and the gauges say no spark. What in the world can be happening? After new starter was put in----the car was driven from nashville to atlanta for christmas break with no problem. During xmas break--this all started. Daughter needs car for her nursing clinicals---please help.